package com.atguigu.lease.web.admin.service.impl;

import com.atguigu.lease.common.constant.RedisConstant;
import com.atguigu.lease.common.exception.LeaseException;
import com.atguigu.lease.common.result.ResultCodeEnum;
import com.atguigu.lease.common.utils.JwtUtil;
import com.atguigu.lease.model.entity.SystemUser;
import com.atguigu.lease.model.enums.BaseStatus;
import com.atguigu.lease.web.admin.service.LoginService;
import com.atguigu.lease.web.admin.service.SystemUserService;
import com.atguigu.lease.web.admin.vo.login.CaptchaVo;
import com.atguigu.lease.web.admin.vo.login.LoginVo;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.wf.captcha.SpecCaptcha;
import com.wf.captcha.base.Captcha;
import org.apache.commons.codec.digest.DigestUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisCommand;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Service;
import org.springframework.util.ObjectUtils;
import org.springframework.util.StringUtils;

import java.util.UUID;
import java.util.concurrent.TimeUnit;

@Service
public class LoginServiceImpl implements LoginService {
@Autowired
private RedisTemplate<String,Object> redisTemplate;
@Autowired
private SystemUserService systemUserService;
    @Override
    public CaptchaVo getCaptcha() {
        // 1.生成验证码图片以及key
        /**
         * 参数1 ：长的像素
         * 参数2：高的像素
         * 参数3：字符数量
         */
        SpecCaptcha specCaptcha = new SpecCaptcha(130, 48, 4);
        specCaptcha.setCharType(Captcha.TYPE_DEFAULT);// 数字和字母
        // 2.将验证存储到redis中
        String code = specCaptcha.text().toLowerCase(); //验证码
        String key =RedisConstant.ADMIN_LOGIN_PREFIX+UUID.randomUUID().toString();
        redisTemplate.opsForValue().set(key,code,RedisConstant.ADMIN_LOGIN_CAPTCHA_TTL_SEC, TimeUnit.SECONDS);
        // 3.将图片和key存到vo
        String image = specCaptcha.toBase64(); // 返回图片字符串
        CaptchaVo captchaVo = CaptchaVo.builder()
                .image(image)
                .key(key)
                .build();
        return captchaVo;
    }

    @Override
    public String login(LoginVo loginVo) {
        // 1. 根据接受的验证码验证是否为null ，不为null继续
       if(ObjectUtils.isEmpty(loginVo.getCaptchaCode())){
           throw  new LeaseException(ResultCodeEnum.APP_LOGIN_CODE_EMPTY);
       }
        // 2. 根据key判定redis的验证码是否过期
        String redisCode = (String) redisTemplate.opsForValue().get(loginVo.getCaptchaKey());
       if(ObjectUtils.isEmpty(redisCode)){
           throw  new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_EXPIRED);
       }
        // 3. 进行验证码对比，相等继续
        if(!redisCode.equalsIgnoreCase(loginVo.getCaptchaCode())){
            throw  new LeaseException(ResultCodeEnum.APP_LOGIN_CODE_ERROR);
        }
        // 4. 根据账号进行数据查询，查不到的数据为空继续
        LambdaQueryWrapper<SystemUser> systemUserLambdaQueryWrapper = new LambdaQueryWrapper<>();
        systemUserLambdaQueryWrapper.eq(SystemUser::getUsername,loginVo.getUsername());
        SystemUser systemUser = systemUserService.getOne(systemUserLambdaQueryWrapper);
        if(systemUser==null){
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_NOT_EXIST_ERROR);
        }
        // 5.对比密码（加密）
       if (!systemUser.getPassword().equals(DigestUtils.md5Hex(loginVo.getPassword()))){
           throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_ERROR);
       }
        // 6.检查账号是否被被禁用
        if(systemUser.getStatus() == BaseStatus.DISABLE){
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_DISABLED_ERROR);
        }
        // 7.jwtUtils生成token 返回即可
        String token = JwtUtil.createToken(systemUser.getId(), loginVo.getUsername());
        return token;
    }
}
